California Registered Dental Assistant (RDA) Written Practice Exam

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Which of the following statements most accurately defines engineering controls?

  1. Policies and procedures to prevent accidents

  2. Materials and devices that prevent employees' exposure to hazardous or infectious substances

  3. Educational programs on safety

  4. Inspections and maintenance routines

The correct answer is: Materials and devices that prevent employees' exposure to hazardous or infectious substances

Engineering controls refer to physical changes or equipment that are specifically designed to eliminate or reduce potential hazards in the workplace. Option A, policies and procedures, may contribute to overall safety but they are not considered engineering controls. Option C, educational programs, are important for promoting a culture of safety but they do not necessarily eliminate or reduce hazards. Option D, inspections and maintenance routines, may identify hazards but they do not actively prevent exposure to hazardous or infectious substances.

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